Differentiating between ANALYZE and EXPLAIN statements

Signed-off-by: iifawzi <[email protected]>

Author: iifawzi

src/Parser.php

@@ -466,27 +466,44 @@ public function parse()
                 continue;
             }
 
-            // Checking if it is a known statement that can be parsed.
-            if (empty(static::$STATEMENT_PARSERS[$token->keyword])) {
-                if (! isset(static::$STATEMENT_PARSERS[$token->keyword])) {
-                    // A statement is considered recognized if the parser
-                    // is aware that it is a statement, but it does not have
-                    // a parser for it yet.
-                    $this->error('Unrecognized statement type.', $token);
-                }
+            $lastIdx = $list->idx;
+
+            ++$list->idx; // Skip ANALYZE
+            $first = $list->getNextOfType(Token::TYPE_KEYWORD);
+            $second = $list->getNextOfType(Token::TYPE_KEYWORD);
+            $statementName = null;
+
+            // ANALYZE keyword can be an indication of two cases:
+            // 1- ANALAYZE TABLE statements, in both mariaDB and MySQL
+            // 2- Explain statement, in case of mariaDB https://mariadb.com/kb/en/explain-analyze/
+            // We need to point case 2 to use the EXPLAIN Parser.
+            if ($token->keyword === 'ANALYZE' && $first->keyword !== 'TABLE' && $second->keyword !== 'TABLE') {
+                $list->idx = $lastIdx;
+                $statementName = 'EXPLAIN';
+            } else {
+                $list->idx = $lastIdx;
+                // Checking if it is a known statement that can be parsed.
+                if (empty(static::$STATEMENT_PARSERS[$token->keyword])) {
+                    if (! isset(static::$STATEMENT_PARSERS[$token->keyword])) {
+                        // A statement is considered recognized if the parser
+                        // is aware that it is a statement, but it does not have
+                        // a parser for it yet.
+                        $this->error('Unrecognized statement type.', $token);
+                    }
 
-                // Skipping to the end of this statement.
-                $list->getNextOfType(Token::TYPE_DELIMITER);
-                $prevLastIdx = $list->idx;
-                continue;
+                    // Skipping to the end of this statement.
+                    $list->getNextOfType(Token::TYPE_DELIMITER);
+                    $prevLastIdx = $list->idx;
+                    continue;
+                }
             }
 
             /**
              * The name of the class that is used for parsing.
              *
              * @var string
              */
-            $class = static::$STATEMENT_PARSERS[$token->keyword];
+            $class = static::$STATEMENT_PARSERS[$statementName ? $statementName : $token->keyword];
 
             /**
              * Processed statement.

tests/Parser/AnalyzeStatementTest.php

@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpMyAdmin\SqlParser\Tests\Parser;
+
+use PhpMyAdmin\SqlParser\Tests\TestCase;
+
+class AnalyzeStatementTest extends TestCase
+{
+    /**
+     * @dataProvider analyzeProvider
+     */
+    public function testAnalyze(string $test): void
+    {
+        $this->runParserTest($test);
+    }
+
+    /**
+     * @return string[][]
+     */
+    public function analyzeProvider(): array
+    {
+        return [
+            ['parser/parseAnalyzeTable'],
+            ['parser/parseAnalyzeTable1'],
+        ];
+    }
+}

tests/Parser/ExplainStatementTest.php

@@ -23,6 +23,7 @@ public function explainProvider(): array
     {
         return [
             ['parser/parseExplain'],
+            ['parser/parseExplain1'],
         ];
     }
 }

tests/data/parser/parseAnalyzeTable.in

@@ -0,0 +1 @@
+ANALYZE TABLE tbl